Ddst
[医][=Denver Development Screening Test]丹佛发育筛选测验：鉴定儿童发育迟缓的测验
🗣️ 情景例句
This is Mr. Wu in Room 415.
我在415房间，姓巫。
It is better to be alone than in bad company.
无友要比交坏友好。
It has 102 storeys and 73 lifts.
有102层楼，有电梯73部。